More Nikon FX Rumors, 2 Cameras in August

Things are definitely heating up for Nikon’s upcoming DSLRs.  The latest word is that 2 new FX-format cameras will be here by the end of August. 
According to a tipster to Nikon Rumors, a recent Nikon-authorized dealer event revealed some details about the Nikon D700 and D3s replacements.

Here is what the Nikon rep said: “Two new FX bodies will be announced by the end of August. Availability in Fall.” Even though the rep wasn’t explicit about which current cameras are going to be replaced, it was quite clear they were talking about “old body designs” (guess D700 and D3). Nevertheless, the two FX cameras will be aimed at different customers who have different needs: one camera for “expert” photographers, the other for “pro” photographers. Technical spec and form factors will be significantly different as well.

These rumors appear to be pretty consistent with the recent ones we heard about a Nikon D4 and D800 a couple of weeks ago.
What are your thoughts on these rumors?  Also, what’s the difference between an “expert” camera and a “pro” camera?
[via Nikon Rumors]